Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title Linux kernel vulnerabilities
Informations
NameUSN-4209-1First vendor Publication2019-12-02
VendorUbuntuLast vendor Modification2019-12-02
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score7.5Attack RangeNetwork
Cvss Impact Score6.4Attack ComplexityLow
Cvss Expoit Score10AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04 - Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi2: Linux kernel for Raspberry Pi 2 - linux-aws-5.0: Linux kernel for Amazon Web Services (AWS) systems - linux-gke-5.0: Linux kernel for Google Container Engine (GKE) systems - linux-hwe: Linux hardware enablement (HWE) kernel - linux-oem-osp1: Linux kernel for OEM processors - linux-oracle-5.0: Linux kernel for Oracle Cloud systems

Details:

Jann Horn discovered that the OverlayFS and ShiftFS Drivers in the Linux kernel did not properly handle reference counting during memory mapping operations when used in conjunction with AUFS. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-15794)

It was discovered that a buffer overflow existed in the 802.11 Wi-Fi configuration interface for the Linux kernel when handling beacon settings. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-16746)

It was discovered that there was a memory leak in the Advanced Buffer Management functionality of the Netronome NFP4000/NFP6000 NIC Driver in the Linux kernel during certain error scenarios. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19076)

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.04:
linux-image-5.0.0-1008-oracle 5.0.0-1008.13
linux-image-5.0.0-1022-aws 5.0.0-1022.25
linux-image-5.0.0-1023-kvm 5.0.0-1023.25
linux-image-5.0.0-1023-raspi2 5.0.0-1023.24
linux-image-5.0.0-1026-gcp 5.0.0-1026.27
linux-image-5.0.0-37-generic 5.0.0-37.40
linux-image-5.0.0-37-generic-lpae 5.0.0-37.40
linux-image-5.0.0-37-lowlatency 5.0.0-37.40
linux-image-aws 5.0.0.1022.24
linux-image-gcp 5.0.0.1026.51
linux-image-generic 5.0.0.37.39
linux-image-generic-lpae 5.0.0.37.39
linux-image-gke 5.0.0.1026.51
linux-image-kvm 5.0.0.1023.24
linux-image-lowlatency 5.0.0.37.39
linux-image-oracle 5.0.0.1008.34
linux-image-raspi2 5.0.0.1023.21
linux-image-virtual 5.0.0.37.39

Ubuntu 18.04 LTS:
linux-image-5.0.0-1008-oracle 5.0.0-1008.13~18.04.1
linux-image-5.0.0-1022-aws 5.0.0-1022.25~18.04.1
linux-image-5.0.0-1026-gcp 5.0.0-1026.27~18.04.1
linux-image-5.0.0-1026-gke 5.0.0-1026.27~18.04.2
linux-image-5.0.0-1030-oem-osp1 5.0.0-1030.34
linux-image-5.0.0-37-generic 5.0.0-37.40~18.04.1
linux-image-5.0.0-37-generic-lpae 5.0.0-37.40~18.04.1
linux-image-5.0.0-37-lowlatency 5.0.0-37.40~18.04.1
linux-image-aws-edge 5.0.0.1022.36
linux-image-gcp 5.0.0.1026.30
linux-image-generic-hwe-18.04 5.0.0.37.95
linux-image-generic-lpae-hwe-18.04 5.0.0.37.95
linux-image-gke-5.0 5.0.0.1026.15
linux-image-lowlatency-hwe-18.04 5.0.0.37.95
linux-image-oem-osp1 5.0.0.1030.34
linux-image-oracle-edge 5.0.0.1008.7
linux-image-snapdragon-hwe-18.04 5.0.0.37.95
linux-image-virtual-hwe-18.04 5.0.0.37.95

After a standard system update you need to reboot your computer to make all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

References:
https://usn.ubuntu.com/4209-1
CVE-2019-15794, CVE-2019-16746, CVE-2019-19076

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.0.0-37.40
https://launchpad.net/ubuntu/+source/linux-aws/5.0.0-1022.25
https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1026.27
https://launchpad.net/ubuntu/+source/linux-kvm/5.0.0-1023.25
https://launchpad.net/ubuntu/+source/linux-oracle/5.0.0-1008.13
https://launchpad.net/ubuntu/+source/linux-raspi2/5.0.0-1023.24
https://launchpad.net/ubuntu/+source/linux-aws-5.0/5.0.0-1022.25~18.04.1
https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1026.27~18.04.1
https://launchpad.net/ubuntu/+source/linux-gke-5.0/5.0.0-1026.27~18.04.2
https://launchpad.net/ubuntu/+source/linux-hwe/5.0.0-37.40~18.04.1
https://launchpad.net/ubuntu/+source/linux-oem-osp1/5.0.0-1030.34
https://launchpad.net/ubuntu/+source/linux-oracle-5.0/5.0.0-1008.13~18.04.1

Original Source

Url : http://www.ubuntu.com/usn/USN-4209-1

CWE : Common Weakness Enumeration

%idName
100 %CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Os3315

Alert History

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0
DateInformations
2019-12-03 05:20:13
  • First insertion